Minimize Resolution and Swath

Spatial and Spectral Resolutions

The surface area measured on the ground and represented by an individual pixel, is termed as the spatial resolution. For SENTINEL-2, there are three possible spatial resolutions (see Table 1).

 

Spectral resolution is defined as a measure of ability to resolve features in the electromagnetic spectrum. SENTINEL-2 spectral resolutions (Bandwidth) are provided in Table 1.

Table 1: Wavelengths and bandwidths of MSI instrument spatial resolutions.

Spatial Resolution
(m)
Band Number Central Wavelength
(nm)
Bandwidth
(nm)
10 2 490 65
3 560 35
4 665 30
8 842 115
20 5 705 15
6 740 15
7 783 20
8a 865 20
11 1 610 90
12 2 190 180
60 1 443 20
9 945 20
10 1 380 30

Radiometric Resolution

Radiometric resolution is a measure of the ability of an imaging system to record different levels of brightness or tone. The radiometric resolution of SENTINEL-2 is 12-bit. This gives a potential range of brightness levels from 0 - 4 095.

Note:
More information on Spatial and Radiometric Resolutions used in SENTINEL-2 Mission can be found here.

 

Temporal Resolution

Temporal resolution is the amount of time, expressed in days, that elapses before a satellite revisits a particular point on the Earth's surface. The satellites in the SENTINEL-2 constellation will provide a revisit time of 5 days at the equator in cloud-free conditions.

Swath Width

The swath width of SENTINEL-2 is 290 km. In comparison, the swath width of LANDSAT 5 TM and LANDSAT 7 ETM+ is 185 km, and the swath width of SPOT-5 is 120 km.